Sorry it's not my code so i can't help you. I'm pretty sure Codejunkies has a similar code i'll see if i can find it for you.
EDIT: No they don't have a code i just checked. I'm guessing you're using Pokemon White? Because the code worked fine on my Black Version.
Pokemon White
Mark Pokémon in Box PC
xx = hex number of ability
Change the Ability Of Pokemon
Black Version *Untested so please test*
Ability List [Gen V]
All credits go to limetka and the other coders over at GBA Temp
I'm sorry the code didnt work but it wasnt my code to begin with. I guess you'll have to wait till Riolu either fixes his code or someone else comes up with a new code. Sorry.
lol No idea. Sorry i'm not that educated when it comes to codes. I don't think it changes the PID, though i could be wrong. Check over at GBA Temp that's where i found the code.
Pokémon Black/White (any language)
Infinite Steps at the Abyssal Ruins (do a step while pressing Start to surface)
Pokémon Black (E/U)
Single Train and Super Single Train completed (adds 1 star to the trainer card) [start+Select]
Pokémon White (E/U)
Single Train and Super Single Train completed (adds 1 star to the trainer card) [start+Select]
All credits go to M@T over at GBA Temp
Pokemon White
Nature Modifier on Status Screen (L/R)
Pokemon Black
Nature Modifier on Status Screen (L/R)
Use L and R to cycle through natures until you find the desired one. All credits go to elixirdream over at GBA Temp
Here try these
Pokemon Black
View IVs/EVs (L/R/Start)
While viewing a Pokemon's stats, press L to see IVs, press R to see EVs, or press Start to see the normal stats
White Version
All credits go to Prof. 9 over at GBA Temp
It appears on your pokemon's stat screen. Press R to get EV's, Press L to get IV's and Press Start to reset back to normal. You sure you put the code in correctly?
Only codes are the individual ones at the moment. It is a pain having to mark them then save, then reset but for now that's what we'll have to do... unless someone can create the codes you want.